Characteristics stainless steel chest piece ensures excellent acoustic quality high performance glass fibre diaphragm with a non chill ring ergonomically shaped stainless steel head piece with reinforced spring for extended shelf life and optimal wearer comfort screwable soft ear tips adjust to the shape of the ear effectiveley Y-tube with 3-way sound transmission connector guarantees a good resonance through optimal sound conduction latex-free no use of phthalates (DEHP free) spare parts set (each one pair of soft and hard ear tips, diaphragm and diaphragm ring) and name plate Characteristics Version Pediatric twin-head stethoscope for infants diaphragm diameter 35 mm | length 75 cm